WO1999041450A1 - Steam box - Google Patents
Steam box Download PDFInfo
- Publication number
- WO1999041450A1 WO1999041450A1 PCT/FI1999/000104 FI9900104W WO9941450A1 WO 1999041450 A1 WO1999041450 A1 WO 1999041450A1 FI 9900104 W FI9900104 W FI 9900104W WO 9941450 A1 WO9941450 A1 WO 9941450A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steam
- spindle
- box
- valve
- steam box
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/008—Steam showers
Definitions
- the invention relates to a steam box in a paper/board machine for passing steam into connection with a paper/board web.
- the applicant's earlier FI 945969 patent application discloses a steam box structure which comprises a blower part and a separate steam distributor frame and a connecting duct therebetween.
- the apparatus comprises separate valves through which steam can be passed from the distributor frame through the valves into hoses and further into a distribution chamber/chambers of the blower part and further into connection with a steam distribution surface/a board web/a paper web.
- the regulation valves for regulating the flow of steam into the distributor part are situated in a different unit from that of the discharge surface of steam. The regulation valves can thus be placed more readily in a location where it is easy to service them.
- This application discloses a totally novel type of arrangement for a steam box structure.
- the invention proposes using a separate cassette which contains steam regulation valves and which can be removed from inside the steam box on support of guides.
- the cassette can be removed to a service position or moved altogether out of connection of a machine for servicing.
- the steam box in accordance with the invention is characterized by what is set forth in the claims.
- Figure 1 A is an axonometric view of a steam box from the front.
- Figure IB is an axonometric view of the steam box and from the rear. Dashed lines illustrate a valve cassette and steam feed compartments which are situated inside the steam box and through which steam can be fed from a profiled web width into connection with the web.
- Figure 2 shows a section I— I of the steam box illustrated in Fig. 1A.
- Figure 3 is an axonometric view of taking the valve cassette out of the interior of the steam box.
- Figure 4 shows a section II— II of Fig. IB, i.e. the valve cassette and the steam box in a running position.
- Fig. 1A shows a steam box 10 in connection with a paper/board web.
- the flow of steam into connection with the paper /board web can be regulated by regulating the supply of steam into different feed sections A 1 ,A 2 ... (different feed sections of the steam box) by means of valves arranged across the width of the steam box.
- the steam box may comprise a structure by means of which steam is passed into a constant steam feed section A 100 at the inlet side 50' of a steam discharge surface 50 of the steam box (viewed in the direction of run of the web).
- feed sections A ⁇ A ⁇ A ... At the outlet side 50" of the steam discharge surface 50, there are situated feed sections A ⁇ A ⁇ A ..., of which there are a plurality across the width of the steam box.
- Fig. IB shows the steam box from the rear.
- the steam feed sections A j ,A 2 ... are arranged across the width of the steam box, and steam can be passed from an inlet chamber 11 through the valves 12a 1 ; 12a 2 ... of a valve cassette 14 into each section A 1 ,A 2 ,A 3 ..., as desired.
- the figures show an embodiment in which the steam box is disposed in connection with a cylinder surface, in which connection the discharge surface for the steams of the box is curved.
- the invention is also suitable for straight steam boxes.
- the shape of the steam box is not restricted in any way.
- Fig. 2 shows a section I— I of Fig. 1A.
- steam is passed through an inlet tube into the distribution chamber 11 of the steam box 10 and therefrom, for example, through the valve 12a j into the steam feed section Ai .
- the supply of steam into the feed section A j and further the disch-arge of steam through a discharge surface A ⁇ of the feed section A t into connection with a paper/board web are regulated by moving a spindle of the valve 12S ⁇ . Openings O l 5 O 2 of a spindle tube 13a ⁇ of each valve 12a 1 ; 12a 2 ... open into the space 11, in which connection steam enters a spindle cavity E of the valve 12a 1 ,12a 2 ...
- valves 12a ⁇ ,12a 2 ... are situated in the movable valve cassette 14.
- the valves 12a 1; 12a 2 ... are attached to the cassette 14, which is a box-shaped elongated frame part, the spindle 12b of the valve lla ⁇ extending through a frame surface Ma j of said frame part.
- the position of the valve spindle 12b can be adjusted by adjusting the position of the spindle by means of air pressure.
- the spindle tube 13a is advantageously a flexible, e.g. bellows-like structure, which is positioned at its end 13b, for example, around the steam inlet opening Ji in the wall T j of the feed section A j when the cassette 14 is in a running position.
- the cassette 14, being an elongated box-shaped structure, 4 comprises tube connections e 1( e 2 inside it for each valve 12a 1 ; 12a 2 ... for adjusting the position of each of them by means of air pressure.
- the air pressure can be passed into a space N on the other side of a piston 12c of the spindle 12b of the valve 12a j , 12 2 ....
- the spindle 12b can be pressed against the spring force of a spring 13c to a desired regulation position.
- the cassette 14 preferably comprises wheels, guides or equivalent 15a ⁇ , 15a 2 ... , on whose support the cassette 14 can be brought from a running position to a servicing position.
- an actuator 16 preferably, for instance, an elongated loading hose, for pressing the end of the spindle tube 12b into contact with the wall T, of the feed section A l when the cassette 14 is in the running position.
- the cassette 14 is guided by means of a pull-out casing 17, which defines a steam inlet chamber D j inside it.
- the pull-out casing 17 extends sideways perpendicularly to the machine direction of a paper/board machine and, by means of the pull-out tube 17, the cassette 14 can be drawn sufficiently out of connection of the steam box structures to allow servicing operations.
- the cassette 14 has been drawn to a servicing position from inside the pull- out tube 17.
- Fig. 4 shows a section II— II of Fig. 1.
- Connecting hoses f ⁇ ,f 2 ... are connected to the ends of the tubes e 1 ,e 2 at the end of the cassette 17.
Landscapes
- Paper (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU24262/99A AU2426299A (en) | 1998-02-13 | 1999-02-11 | Steam box |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FIU980081 | 1998-02-13 | ||
FI980081U FI3463U1 (sv) | 1998-02-13 | 1998-02-13 | Ånglåda |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999041450A1 true WO1999041450A1 (en) | 1999-08-19 |
Family
ID=8550401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI1999/000104 WO1999041450A1 (en) | 1998-02-13 | 1999-02-11 | Steam box |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2426299A (sv) |
FI (1) | FI3463U1 (sv) |
WO (1) | WO1999041450A1 (sv) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1310591A2 (de) * | 2001-11-08 | 2003-05-14 | Voith Paper Patent GmbH | Dampfblaskasten |
DE10220377A1 (de) * | 2002-05-07 | 2003-11-20 | Voith Paper Patent Gmbh | Dampfblaskasteneinheit |
US7475496B2 (en) | 2002-05-07 | 2009-01-13 | Voith Paper Patent Gmbh | Steam blower box unit |
EP2128333A1 (en) | 2008-05-31 | 2009-12-02 | ABB Ltd. | A steam shower having improved maintenance access |
US7634860B2 (en) | 2004-05-03 | 2009-12-22 | Transphase Technology, Ltd. | Steam box |
US7871494B2 (en) * | 2008-01-09 | 2011-01-18 | Honeywell Asca Inc. | Drop-out steam profiling cartridge |
DE102015217369A1 (de) * | 2015-09-11 | 2017-01-05 | Voith Patent Gmbh | Dampfblaskasten |
RU2764086C1 (ru) * | 2019-10-15 | 2022-01-13 | Айбиэс Оф Америка | Система, система управления, система контроля и способ управления и очистки парового ящика |
US11421383B2 (en) | 2019-08-27 | 2022-08-23 | Andritz Inc. | Steam box with multiple valves and diffuser plates and related system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI95404B (sv) * | 1994-12-20 | 1995-10-13 | Valmet Paper Machinery Inc | Ånglåda i pappers-/kartongmaskin |
-
1998
- 1998-02-13 FI FI980081U patent/FI3463U1/sv not_active IP Right Cessation
-
1999
- 1999-02-11 AU AU24262/99A patent/AU2426299A/en not_active Abandoned
- 1999-02-11 WO PCT/FI1999/000104 patent/WO1999041450A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI95404B (sv) * | 1994-12-20 | 1995-10-13 | Valmet Paper Machinery Inc | Ånglåda i pappers-/kartongmaskin |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10154828A1 (de) * | 2001-11-08 | 2003-05-15 | Voith Paper Patent Gmbh | Dampfblaskasten |
EP1310591A3 (de) * | 2001-11-08 | 2004-05-12 | Voith Paper Patent GmbH | Dampfblaskasten |
EP1310591A2 (de) * | 2001-11-08 | 2003-05-14 | Voith Paper Patent GmbH | Dampfblaskasten |
DE10220377A1 (de) * | 2002-05-07 | 2003-11-20 | Voith Paper Patent Gmbh | Dampfblaskasteneinheit |
WO2003095742A1 (de) * | 2002-05-07 | 2003-11-20 | Voith Paper Patent Gmbh | Dampfblaskasteneinheit |
US7475496B2 (en) | 2002-05-07 | 2009-01-13 | Voith Paper Patent Gmbh | Steam blower box unit |
US7634860B2 (en) | 2004-05-03 | 2009-12-22 | Transphase Technology, Ltd. | Steam box |
US7871494B2 (en) * | 2008-01-09 | 2011-01-18 | Honeywell Asca Inc. | Drop-out steam profiling cartridge |
EP2128333A1 (en) | 2008-05-31 | 2009-12-02 | ABB Ltd. | A steam shower having improved maintenance access |
US8187426B2 (en) * | 2008-05-31 | 2012-05-29 | Abb Ltd. | Steam shower having improved maintenance access |
DE102015217369A1 (de) * | 2015-09-11 | 2017-01-05 | Voith Patent Gmbh | Dampfblaskasten |
US11421383B2 (en) | 2019-08-27 | 2022-08-23 | Andritz Inc. | Steam box with multiple valves and diffuser plates and related system |
RU2764086C1 (ru) * | 2019-10-15 | 2022-01-13 | Айбиэс Оф Америка | Система, система управления, система контроля и способ управления и очистки парового ящика |
US11313077B2 (en) | 2019-10-15 | 2022-04-26 | Ibs Of America | System, control system, an inspection system, and a method of controlling and cleaning a steam box |
US11828024B2 (en) | 2019-10-15 | 2023-11-28 | Ibs Of America | System, control system, an inspection system, and a method of controlling and cleaning a steam box |
Also Published As
Publication number | Publication date |
---|---|
FI3463U1 (sv) | 1998-07-10 |
FIU980081U0 (sv) | 1998-02-13 |
AU2426299A (en) | 1999-08-30 |
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